HIGHCOM Facility Bravo-6, nicknamed the Hive,[1] is a United Nations Space Command military base and its formal headquarters located in Sydney, Australia. The building was roughly conical in structure and on the outside it was surrounded in security gates and other defenses; while on the inside the entrance way bore an atrium.[1]

Below the HIGHCOM Bravo-6 Facility is another massive facility. It is three kilometers below the surface and reinforced with massive blast plating, anti-EMP armor and three kilometers of solid rock. The UNSC Security Committee met here.

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At the time of the Insurrection, Bravo-6 was already in use to monitor dissent in the colonies. Commanding UNSC members currently on site, used the Wendy House portion of the Threat Analysis Wing to run table-top exercises and war-games for possible upcoming operations. This portion of Bravo-6 was abandoned when the Covenant appeared, as the threat of them was more important then the Insurrection.[2]

While Sydney had been severely damaged during the Battle of Earth, HIGHCOM Facility Bravo-6 came out relatively unscathed.[4]

Dr. Halsey and any other survivors of Onyx were brought to Bravo-6 to be debriefed about the actions taken and incidents that took place on the Shield World,[5] after they were rescued by Kilo-Five with the UNSC Port Stanley. Afterwards, Dr. Halsey was put into prison for treason.

In the January of 2553, an assembly of high ranking UNSC officials was called by Commander Musa-096. Here he gave the idea, and explained in great detail, about having a separate and independent branch of the UNSC exclusively for the SPARTAN-IV Program[6][7]